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Przejdź do strony domowej biblioteki Pedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaPedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie
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Wyszukujesz frazę "Williams, R." wg kryterium: Autor

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Wyświetlanie 1-10 z 180
Tytuł:
Studies on the nematode soil fauna of sugar cane fields in Mauritius : 4. Tylenchoidea (partim).
Studies on the nematode soil fauna of sugar cane fields in Mauritius : 4. Tylenchoidea (partim)
Autorzy:
Williams, J. R.
Wydawca:
Mauritius Sugar Industry Research Institute
Powiązania:
Mauritius Sugar Industry Research Institute Occasional papers
Opis:
ze zbiorów prywatnych prof. A. Wilskiego : AWX572
item from pivate collection of prof. A. Wilski : AWX572
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Thresholding nonprobability units in combined data for efficient domain estimation
Autorzy:
Savitsky, Terrance D.
Williams, Matthew R.
Beresovsky, Vladislav
Gershunskaya, Julie
Tematy:
survey sampling
nonprobability sampling
data combining
quasi randomization
thresholding units
bayesian hierarchical modeling
Pokaż więcej
Wydawca:
Główny Urząd Statystyczny
Powiązania:
https://bibliotekanauki.pl/articles/61791496.pdf  Link otwiera się w nowym oknie
Opis:
Quasi-randomization approaches estimate latent participation probabilities for units from a nonprobability / convenience sample. Estimation of participation probabilities for convenience units allows their combination with units from the randomized survey sample to form a survey-weighted domain estimate. One leverages convenience units for domain estimation under the expectation that estimation precision and bias will improve relative to solely using the survey sample; however, convenience sample units that are very different in their covariate support from the survey sample units may inflate estimation bias or variance. This paper develops a method to threshold or exclude convenience units to minimize the variance of the resulting survey-weighted domain estimator. We compare our thresholding method with other thresholding constructions in a simulation study for two classes of datasets based on the degree of overlap between survey and convenience samples on covariate support. We reveal that excluding convenience units that each express a low probability of appearing in both reference and convenience samples reduces estimation error.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods for combining probability and nonprobability samples under unknown overlaps
Autorzy:
Savitsky, Terrance D.
Williams, Matthew R.
Gershunskaya, Julie
Beresovsky, Vladislav
Tematy:
Survey sampling
Nonprobability sampling
Data combining
Inclusion probabilities
Exact sample likelihood
Bayesian hierarchical modeling
Pokaż więcej
Wydawca:
Główny Urząd Statystyczny
Powiązania:
https://bibliotekanauki.pl/articles/31342142.pdf  Link otwiera się w nowym oknie
Opis:
Nonprobability (convenience) samples are increasingly sought to reduce the estimation variance for one or more population variables of interest that are estimated using a randomized survey (reference) sample by increasing the effective sample size. Estimation of a population quantity derived from a convenience sample will typically result in bias since the distribution of variables of interest in the convenience sample is different from the population distribution. A recent set of approaches estimates inclusion probabilities for convenience sample units by specifying reference sample-weighted pseudo likelihoods. This paper introduces a novel approach that derives the propensity score for the observed sample as a function of inclusion probabilities for the reference and convenience samples as our main result. Our approach allows specification of a likelihood directly for the observed sample as opposed to the approximate or pseudo likelihood. We construct a Bayesian hierarchical formulation that simultaneously estimates sample propensity scores and the convenience sample inclusion probabilities. We use a Monte Carlo simulation study to compare our likelihood based results with the pseudo likelihood based approaches considered in the literature.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bridging senses of place and mobilities scholarships to inform social-ecological systems governance : a research agenda
Autorzy:
Kajdanek, Katarzyna
Trąbka, Agnieszka
Stedman, Richard
Stewart, William P.
Kołodyńska, Iga
Buchecker, Matthias
Zawieska, Jakub
Di Masso, Andrés
Lau, Ursula
Pearson, Jasmine
Frąckowiak, Maciej
Ortiz-Przychodzka, Stefan
Rogowski, Łukasz
Fagerholm, Nora
Gottwald, Sarah
Wirth, Timo von
Hakkarainen, Viola
Williams, Daniel R.
Quinn, Tara
Manzo, Lynne C.
Raymond, Christopher M.
Opis:
Uncertainty and change are increasingly commonplace as communities respond to impacts of social-ecological change including climate change, and dangerous levels of pollution. Given the extent of these crises, new approaches are needed to support responses. Here we identify challenges and discuss insights that the nexus of Senses of place (SoP) and mobilities research offers in navigating such uncertainty. We conducted a two-round Delphi, followed by a workshop, and collaborative writing process with a global network of researchers with expertise in either or both SoP and mobilities research. Participants identified five challenges at the place-mobility nexus that emerge when a social-ecological system is disrupted. We use the 2022 Odra River fish die-off to exemplify the identified challenges: 1) accounting for power dynamics, inequalities and motility; 2) doing justice to more-than human actors; 3) integrating multiple and sometimes nested spatial scales; 4) considering temporalities of place and mobilities, and 5) embracing multisensoriality. To address these challenges, we recommend drawing on diverse methods and knowledge co-creation processes that combine more-than-human perspectives, multisensoriality, and engage in the dynamic relations between places to understand people-place disruptions in the face of socio-spatial precarity. Addressing such knowledge gaps requires stronger collaboration of mobilities and place researchers.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Autorzy:
Asmussen, N.
Deineka, O.
Herdoíza, G.
Knecht, M.
Stoffer, P.
Bruno, M.
Caprini, I.
Redmer, C.F.
Guellati-Khelifa, S.
Meyer, H.B.
Benayoun, M.
Dominguez, C.A.
Ottnad, K.
Cardoso, N.
Monnard, J.
Eidelman, S.I.
Ignatov, F.
Roberts, B.L.
Serednyakov, S.
Druzhinin, V.P.
Hermansson-Truedsson, N.
Vainshtein, A.
Kupich, A.
Sánchez-Puertas, P.
Nomura, D.
Rodríguez-Sánchez, A.
Zhang, Z.
Shwartz, B.
Koponen, J.
Todyshev, K. Yu.
Van de Water, R.
von Hippel, G.
Curciarello, F.
Roig, P.
Aoyama, T.
Fischer, C.S.
Gelzer, Z.
Logashenko, I.
Leupold, S.
Peris, S.
Gérardin, A.
Davier, M.
Laub, L.
Nyffeler, A.
Davies, C.T.H.
Czyż, H.
Weil, E.
Achasov, M.N.
Hoferichter, M.
Eichmann, G.
Williams, R.
Kubis, B.
Golterman, M.
Wilhelm, J.
Hagelstein, F.
Passera, M.
Simula, S.
Zhevlakov, A.S.
Neil, E.T.
Nio, M.
Bashir, A.
Keshavarzi, A.
Denig, A.
Hörz, B.
Mibe, T.
Gámiz, E.
Colangelo, G.
Perez del Rio, Elena
Danilkin, I.
Blum, T.
Marinković, M.K.
Wittig, H.
Gülpers, V.
DeTar, C.
Kronfeld, A.S.
El-Khadra, A.X.
Lehner, C.
Miura, K.
Carloni Calame, C.M.
Cè, M.
Venanzoni, G.
Chao, E.-H.
Müller, S.E.
Vanderhaeghen, M.
Hatton, D.
McNeile, C.
Hudspith, R.J.
Hoid, B.-L.
Pauk, V.
Della Morte, M.
Charles, J.
Vaquero Avilés-Casco, A.
San José, T.
Radzhabov, A.E.
Izubuchi, T.
Hayakawa, M.
Holz, S.
Kupść, A.
Lellouch, L.
Stöckinger-Kim, H.
Giusti, D.
Fael, M.
Pascalutsa, V.
Portelli, A.
de Rafael, E.
Stöckinger, D.
Bijnens, J.
Laiho, J.
Mohler, D.
Jegerlehner, F.
Masjuan, P.
Maltman, K.
Green, J.R.
Malaescu, B.
Marciano, W.J.
Risch, A.
Kinoshita, T.
Nesterenko, A.V.
Crivellin, A.
Chakraborty, B.
Gottlieb, Steven
Procura, M.
Hertzog, D.W.
Raya, K.
Hoecker, A.
Mackenzie, P.B.
Meyer, A.S.
Dorokhov, A.E.
Jin, L.
Solodov, E.P.
Sugar, R.
Teubner, T.
Opis:
We review the present status of the Standard Model calculation of the anomalous magnetic moment of the muon. This is performed in a perturbative expansion in the fine-structure constant $\alpha$ and is broken down into pure QED, electroweak, and hadronic contributions. The pure QED contribution is by far the largest and has been evaluated up to and including $\mathcal{O}(\alpha^{5})$ with negligible numerical uncertainty. The electroweak contribution is suppressed by $(m_{\mu}/M_{W})^{2}$ and only shows up at the level of the seventh significant digit. It has been evaluated up to two loops and is known to better than one percent. Hadronic contributions are the most difficult to calculate and are responsible for almost all of the theoretical uncertainty. The leading hadronic contribution appears at $\mathcal{O}(\alpha^{2})$ and is due to hadronic vacuum polarization, whereas at $\mathcal{O}(\alpha^{3})$ the hadronic light-by-light scattering contribution appears. Given the low characteristic scale of this observable, these contributions have to be calculated with nonperturbative methods, in particular, dispersion relations and the lattice approach to QCD. The largest part of this review is dedicated to a detailed account of recent efforts to improve the calculation of these two contributions with either a data-driven, dispersive approach, or a first-principle, lattice-QCD approach. The final result reads $a_{\mu}^{SM}= 116 591 810(43) \times 10^{-11}$ and is smaller than the Brookhaven measurement by 3.7 $\sigma$ The experimental uncertainty will soon be reduced by up to a factor four by the new experiment currently running at Fermilab, and also by the future J-PARC experiment. This and the prospects to further reduce the theoretical uncertainty in the near future – which are also discussed here – make this quantity one of the most promising places to look for evidence of new physics.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
The DarkSide multiton detector for the direct dark matter search
Autorzy:
Segreto, E.
Montanari, D.
Pallavicini, M.
Pugachev, D.
Koh, G.
Tartaglia, R.
Bonfini, G.
Mari, S. M.
Cadoni, M.
Yang, C. G.
Wójcik, Marcin
Miletic, T.
Jaffe, D. E.
Cocco, A. G.
D’Angelo, D.
Tatarowicz, J.
Back, H. O.
Rossi, N.
Martoff, J.
Fomenko, K.
Hime, A.
Zavatarelli, S.
Fiorillo, G.
Milincic, R.
Razeto, A.
Odrowski, S.
Sablone, D.
Saldanha, R.
Tonazzo, A.
Parmeggiano, S.
Grandi, L.
Sands, W.
Ludhova, L.
Orrell, J. L.
Walker, S. E.
Mandarano, A.
Orsini, M.
Lukyachenko, G.
Maricic, J.
Luitz, S.
Shields, E.
Guardincerri, Y.
Biery, K.
Lissia, M.
Montuschi, M.
Zhong, W. L.
Ianni, Al.
Skorokhvatov, M.
Meroni, E.
Mount, B.
Musico, P.
Unzhakov, E.
Brodsky, J.
Pantic, E.
Cadonati, L.
Agnes, P.
Watson, A. W.
Franco, D.
Perasso, L.
Wang, H.
Qian, H.
Rountree, S. D.
Hackett, B.
D’Incecco, M.
Ortica, F.
Humble, P.
Cao, H.
Ranucci, G.
Gabriele, F.
Cavalcante, P.
Williams, R.
Ianni, An.
Gromov, M.
Pelczar, Krzysztof
Renshaw, A.
Di Eusanio, F.
Xu, J.
Romani, A.
Korablev, D.
Goretti, A.
Chepurnov, A.
Perasso, S.
Pocar, A.
Candela, A.
Brigatti, A.
Parsells, B.
Foxe, M.
Keeter, K.
De Deo, M.
Nelson, A.
Recine, K.
Devoto, A.
Condon, C.
Fan, A.
Budano, F.
Baldin, B.
Westerdale, S.
Bossa, M.
Derbin, A.
Galbiati, C.
Calaprice, F.
Li, P. X.
Davini, S.
Herner, K.
Yoo, J.
Smallcomb, M.
Saggese, P.
Testera, G.
Pelliccia, N.
Edkins, E.
Asner, D. M.
Kidner, S.
Meregaglia, A.
Aalseth, C. E.
Kobychev, V.
Pagani, L.
Korga, G.
Pordes, S.
Wang, Y.
Semenov, D.
Muratova, V.
Monzani, M. E.
Odrzywołek, Andrzej
Machulin, I.
Suvurov, Y.
Marini, L.
Markov, D.
Randle, K.
Sotnikov, A.
Canci, N.
Hungerford, E.
Forster, G.
Wada, M.
Kurlej, A.
Alton, A.
Crippa, L.
Smirnov, O.
Zuzel, Grzegorz
Meyers, P. D.
Empl, A.
Kendziora, C.
Yu, B.
Cariello, M.
Rossi, B.
Jollet, C.
Ma, Y. Q.
Arisaka, K.
Reinhold, B.
Sangiorgio, S.
Mosteiro, P.
Vogelaar, R. B.
Guan, M. Y.
Lombardi, P.
Opis:
Although the existence of dark matter is supported by many evidences, based on astrophysical measurements, its nature is still completely unknown. One major candidate is represented by weakly interacting massive particles (WIMPs), which could in principle be detected through their collisions with ordinary nuclei in a sensitive target, producing observable low-energy (<100 keV) nuclear recoils. The DarkSide program aims at the WIPMs detection using a liquid argon time projection chamber (LAr-TPC). In this paper we quickly review the DarkSide program focusing in particular on the next generation experiment DarkSide-G2, a 3.6-ton LAr-TPC. The different detector components are described as well as the improvements needed to scale the detector from DarkSide-50 (50 kg LAr-TPC) up to DarkSide-G2. Finally, the preliminary results on background suppression and expected sensitivity are presented.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Wyświetlanie 1-10 z 180

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